Displaying Disk Utilization Information (iostat)

Use the iostat command to report statistics about disk input and output, and
to produce measures of throughput, utilization, queue lengths, transaction rates, and service time. For
a detailed description of this command, refer to the iostat(1M) man page.

How to Display Disk Utilization Information (iostat)

You can display disk utilization information by using the iostat command with
a time interval in seconds.

The first line of output shows the statistics since the last time
the system was booted. Each subsequent line shows the interval statistics. The default is
to show statistics for the terminal (tty), disks (fd and sd), and CPU
(cpu).

Example 5-3 Displaying Disk Utilization Information

The following example shows disk statistics that were gathered every five seconds.